The L.A. County Department of Child Protective Services will be formally re-opening an abuse investigation involving Halle Berry and Gabriel Aubry’s daughter, Nahla, following the Thanksgiving brawl between her father, Gabriel Aubry, and her mother’s current boyfriend, French actor Olivier Martinez, RadarOnline.com is exclusively reporting.

“Detectives from the LAPD formally contacted CPS after Gabe’s arrest, because Nahla was present when the fight occurred,” a source close to the situation tells Radar exclusively.

“Nahla wasn’t actually involved in the melee, and by all accounts, Halle whisked her out of the driveway as soon as the fight between Olivier and Gabe started. However, DCFS was contacted because there has been a history of allegations of physical abuse. Social workers will be interviewing Halle, Gabriel and Olivier about what happened on Thanksgiving. DCFS must ensure that Nahla’s environment is safe.”

As we previously reported, while dropping Nahla off with Halle on Thanksgiving morning, Aubry got into a knock-down, drag-out brawl with Martinez.

The cops were called, and both men ended up getting treatment at Cedars-Sinai Medical Center in Los Angeles. Aubry was booked on suspicion of misdemeanor battery, posted a $20,000 bond and has a December 13 court date.

Meanwhile, Berry has reportedly gotten an emergency restraining order to keep Aubry away. The two have been in an ongoing child custody battle. Berry was recently shot down by a Los Angeles judge who ruled that she couldn’t move with Nahla to France, because Gabriel lives in Southern California.

Earlier this year, Aubry was accused of shoving Halle’s nanny while she was holding Nahla. The nanny filed a police report but the Los Angeles City Attorney failed to file charges against Aubry citing a lack of sufficient evidence.

“Gabriel is extremely concerned about his arrest and the fallout this could have on Nahla. She is his entire world and is hopeful that once the truth comes out, he won’t be formally charged with any crime,” the source says.

This is just crazy. What is Halle thinking? This violence is not something she should have her daughter around and we’re not sure that French fiancé is helping the situation.

SMH. We pray for Nahla’s sake that the adults in her life get it together!